James M. Russell has a philosophy degree from the University of Cambridge, a postgraduate qualification in critical theory and has taught at the Open University in the UK. He is the author of A Traveller's Guide to Infinity and co-creator and editor of 'The Traveller's Guide to the Cosmos' series, which includes The Traveller's Guide to Mars and The Traveller's Guide to the Big Bang. He is also consultant editor on Million Dollar Maths (Atlantic Books, 2018) and has edited a wide range of popular science books. He lives in north London with his wife, daughter and two cats.